EP0152521A2 - Placage de grille pour des grilles en gradins à mouvement mécanique pour foyers de grande capacité - Google Patents

Placage de grille pour des grilles en gradins à mouvement mécanique pour foyers de grande capacité Download PDF

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Publication number
EP0152521A2
EP0152521A2 EP84109780A EP84109780A EP0152521A2 EP 0152521 A2 EP0152521 A2 EP 0152521A2 EP 84109780 A EP84109780 A EP 84109780A EP 84109780 A EP84109780 A EP 84109780A EP 0152521 A2 EP0152521 A2 EP 0152521A2
Authority
EP
European Patent Office
Prior art keywords
grate
clamp
grate bars
fixed
bars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84109780A
Other languages
German (de)
English (en)
Other versions
EP0152521A3 (en
EP0152521B1 (fr
Inventor
Erich Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Publication of EP0152521A2 publication Critical patent/EP0152521A2/fr
Publication of EP0152521A3 publication Critical patent/EP0152521A3/de
Application granted granted Critical
Publication of EP0152521B1 publication Critical patent/EP0152521B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/08—Bearers; Frames; Spacers; Supports

Definitions

  • the invention relates to a grate covering for mechanically moving step-shaped grate grates of large combustion systems, in which there are several grate bars that are relatively movable relative to one another in the individual steps, two fixed grate bars and an intermediate movable grate bar being clamped by a clamp, the clamp bolt of which is matched by play the longitudinal slit corresponding to the relative displacement of the movable grate bar and engages with its stops provided at the ends with the fixed grate bars provided on both sides of the movable grate bar.
  • the clamp bolt is formed in one piece and has at its stops straight contact surfaces with which it is supported on the inside of the stationary adjacent grate bars.
  • this known clamping regardless of whether the stops are provided symmetrically or asymmetrically at the ends, there is always the same disadvantage that when fine parts penetrate between adjacent grate bars and the associated jamming of the grate bars, an eccentric force always acts on the clamp bar which is claimed to bend. In particularly extreme cases, this can lead to permanent bending of the clamp bolt.
  • the object of the invention is to readjust the play between adjacent grate bars in a simpler manner and over a larger area, a simpler removal of damaged grate bars and a central force attack in a grate covering of the type described at the outset. only allow tensile forces in the clamp bolt.
  • the two parts together by a screw connection that can be connected not only simplifies the adjustment work, but also increases the adjustment range. This also simplifies the installation and removal of individual defective grate bars.
  • the spherical design of the contact surface on the stops and the arrangement of the centers of curvature in the plane of the clamp bolt axis ensure that all forces acting on the clamp bolt always occur as tensile forces in the clamp bolt and cannot generate any bending moments.
  • a particularly simple and easy-to-use design results from the fact that the two parts of the clamp consist of bolts with opposite threads and can be connected to one another by means of a turnbuckle nut. As a result, when the turnbuckle nut is turned, the two parts of the clamp move evenly against one another or from one another. An uneven setting on one of the two flanks is therefore excluded.
  • the threaded bolts of the clamp bolt have hammer-head-like stops which are provided with laterally projecting wings on which the spherical contact surfaces are formed, a symmetrical configuration of the contact surfaces with respect to the clamp bolt axis is thereby created in a simple manner, thereby ensuring is that the forces introduced always act only as tensile forces in the clamp bolt.
  • the hammer-head-like design of the ends of the clamp bolt which engage in adapted recesses in the outer ribs, not only achieves the necessary anti-rotation of the clamp, but also locks the grate bars gripped by the clamp, this lock acting such that the clamps act summarized grate bars can not move against each other in the vertical direction, since the inclusion of the hammer-head-like stop in the recess fixes the bracket in any direction with respect to the fixed grate bar.
  • the clamp can be accommodated in the displaceable grate bar during assembly, whereupon the two adjacent stationary grate bars can then be inserted into the insertion slots by lowering to the height of the movable grate bar enable, in the end position of the preferably hammer-head-like stop with its two-sided wings, which are provided with the spherical contact surfaces, snaps into a recess on the inside of the outer rib, which serves as an anti-rotation device. Then, by tightening the screw connection, in particular the lock nut, a grate bar group can be clamped in a simple manner.
  • the grate covering shown in FIG. 1 has grate steps which are composed of grate bars 1 fixed during the relative stroke and grate bars 2 movable for this purpose during the relative stroke, these grate steps in the case of movable steps on displaceable support frames 3 or in the case of fixed steps on fixed steps Trag frame 4 lie.
  • the respective fixed grate bars 1 are suspended essentially without play at their hanging end 5 on a hanging rail 6 or 7 of the support frame 3 or 4, while the grate bars 2 movable relative to these grate bars with a longitudinal play on the support frame of the movable or fixed Rest level.
  • the clamp 8 comprises a clamp bolt consisting of two bolts 9 and 10 and a lock nut 11, and hammer-head-like stops 12 and 13 formed at their ends, the side wings 14, 15 and 16, 17 with spherical contact surfaces 18, 19 and 20, 21 respectively exhibit.
  • the hammer head-like lugs 12 and 13 of the bolts 9 and 10 are in their installed position in a recess 22 or 23 essentially adapted to these lugs in the outer ribs 24 or 25 of the fixed grate bars 1.
  • These recesses 22 and 23 are located at the end of insertion slots 26 and 27, in which the bolts 9 and 10 are inserted during assembly until the lugs 12 and 13 reach the recesses 22 and 23, which serve as an anti-rotation device for the bolts.
  • the screws 9 and 10 have opposite threads.
  • 31 denotes a lock nut, the disengagement of these Ver prevents "voltage at the relative movements between the movable grate bar 1 and the bracket. 8
  • the ribs have 32 and 33 of the grate bar 2 longitudinal slots 34, the length of which corresponds to the relative stroke between the grate bars 1 and 2.
  • the clamp 8 When installing the grate bars, the clamp 8 is in the assembled state in the grate bar 2, the bolts 9 and 10 being so far apart that the adjacent fixed grate bars 1 can be lowered from above, with the bolts 9 and 10 in the slots 26 and 27 of the outer ribs 24 and 25 arrive. If the fixed grate bars are then at the same level as the movable grate bar 2, the lock nut 11 sets the desired gap 30 between the fixed and the movable grate bar, whereupon the lock nut 31 is used to secure it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Pallets (AREA)
  • Clamps And Clips (AREA)
EP84109780A 1983-08-24 1984-08-17 Placage de grille pour des grilles en gradins à mouvement mécanique pour foyers de grande capacité Expired EP0152521B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3330636A DE3330636C1 (de) 1983-08-24 1983-08-24 Rostbelag fuer mechanisch bewegte stufenfoermige Feuerungsroste von Grossfeuerungen
DE3330636 1983-08-24

Publications (3)

Publication Number Publication Date
EP0152521A2 true EP0152521A2 (fr) 1985-08-28
EP0152521A3 EP0152521A3 (en) 1986-04-09
EP0152521B1 EP0152521B1 (fr) 1988-03-09

Family

ID=6207396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109780A Expired EP0152521B1 (fr) 1983-08-24 1984-08-17 Placage de grille pour des grilles en gradins à mouvement mécanique pour foyers de grande capacité

Country Status (5)

Country Link
US (1) US4548139A (fr)
EP (1) EP0152521B1 (fr)
JP (1) JPS6060416A (fr)
DE (1) DE3330636C1 (fr)
DK (1) DK404184A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609530B1 (fr) * 1987-01-09 1991-01-11 Traitement Indl Residus Urbain Grille de foyer, avec des barreaux transversaux en elements solidarises par leurs faces frontales
DE9114836U1 (de) * 1991-11-29 1992-02-06 Zementanlagen- und Maschinenbau GmbH Dessau, O-4500 Dessau Rostbolzensicherung gegen Herausgleiten des Rostbolzens aus einem Rostband eines Rostvorwärmers, Rostbandkühlers o.dgl.
EP0650017B1 (fr) * 1993-10-21 1998-04-22 Asea Brown Boveri Ag Grille pour un foyer
US6981455B2 (en) * 2002-03-08 2006-01-03 Lefcort Malcolm D Two-stage wet waste gasifier and burner
EP1540251A2 (fr) * 2002-06-24 2005-06-15 John N. Basic Sr. Grilles de secheur d'incinerateur a temperature reglable
GB2483479A (en) * 2010-09-09 2012-03-14 Tiska Gmbh Furnace grate bars
JP5871541B2 (ja) * 2011-09-29 2016-03-01 荏原環境プラント株式会社 ストーカ式焼却炉の火格子の取り付け構造及びストーカ式焼却炉
EP3982044B1 (fr) * 2020-10-08 2024-04-24 Martin GmbH für Umwelt- und Energietechnik Procédé pour maintenir ensemble des barreaux de grille adjacents, ainsi qu'un ensemble de barreaux de grille

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1168367A (en) * 1912-04-27 1916-01-18 Otto Wundrack Mechanical stoker.
DE386160C (de) * 1921-02-04 1923-12-17 Hans Beer Jun Feuerungsrost
DE436637C (de) * 1925-03-31 1926-11-05 Babcock & Wilcox Dampfkessel W Treppenrost mit nachgiebig gegen die Rostkoerper gedrueckten Seitenwangen
AT131212B (de) * 1929-04-10 1933-01-10 Clemens Schlink Rost aus Flacheisenstäben mit auswechselbarer Feuerbahn.
DE2252580A1 (de) * 1971-12-22 1973-06-28 Von Roll Ag Verbrennungsrost, insbesondere zur verbrennung von muell
DE2808057C2 (de) * 1978-02-24 1980-02-14 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Rostbelag für mechanisch bewegte stufenförmige Feuerungsroste von Großfeuerungen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2263403A (en) * 1938-12-13 1941-11-18 Westinghouse Electric & Mfg Co Stoker grate construction
US3563190A (en) * 1969-08-12 1971-02-16 Canton Stoker Corp Incinerator stoker grate and trunnion assembly
CH585372A5 (fr) * 1975-03-17 1977-02-28 Von Roll Ag
US4103627A (en) * 1975-09-04 1978-08-01 Morse Boulger, Inc. Stoker and grate therefore
DE2622965C2 (de) * 1976-05-21 1978-04-06 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Kompensationseinrichtung für Abmessungsänderungen von Bauteilen aufgrund von Temperaturschwankungen, insbesondere bei Feuerungen
DE2805712C2 (de) * 1978-02-10 1980-01-31 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Roststab, insbesondere für mechanisch bewegte Schürroste von Großfeuerungen
DE2809845C2 (de) * 1978-03-07 1980-03-06 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Rostbelag, insbesondere für Großfeuerungen
DE3049086C2 (de) * 1980-12-24 1983-07-14 Widmer & Ernst AG, 5430 Wettingen Roststabreihe für Feuerungsroste von Verbrennungsöfen
CH669447A5 (fr) * 1982-05-13 1989-03-15 Von Roll Ag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1168367A (en) * 1912-04-27 1916-01-18 Otto Wundrack Mechanical stoker.
DE386160C (de) * 1921-02-04 1923-12-17 Hans Beer Jun Feuerungsrost
DE436637C (de) * 1925-03-31 1926-11-05 Babcock & Wilcox Dampfkessel W Treppenrost mit nachgiebig gegen die Rostkoerper gedrueckten Seitenwangen
AT131212B (de) * 1929-04-10 1933-01-10 Clemens Schlink Rost aus Flacheisenstäben mit auswechselbarer Feuerbahn.
DE2252580A1 (de) * 1971-12-22 1973-06-28 Von Roll Ag Verbrennungsrost, insbesondere zur verbrennung von muell
DE2808057C2 (de) * 1978-02-24 1980-02-14 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Rostbelag für mechanisch bewegte stufenförmige Feuerungsroste von Großfeuerungen

Also Published As

Publication number Publication date
DK404184D0 (da) 1984-08-23
JPS6060416A (ja) 1985-04-08
EP0152521A3 (en) 1986-04-09
DK404184A (da) 1985-02-25
DE3330636C1 (de) 1985-01-10
US4548139A (en) 1985-10-22
EP0152521B1 (fr) 1988-03-09

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